@blueprintjs/core
Version:
Core styles & components
47 lines (45 loc) • 1.98 kB
JavaScript
/*
* Copyright 2016 Palantir Technologies, Inc. All rights reserved.
* Licensed under the BSD-3 License as modified (the “License”); you may obtain a copy
* of the license at https://github.com/palantir/blueprint/blob/master/LICENSE
* and https://github.com/palantir/blueprint/blob/master/PATENTS
*/
;
var React = require("react");
var utils_1 = require("../../common/utils");
var ContextMenu = require("./contextMenu");
function ContextMenuTarget(constructor) {
var _a = constructor.prototype, render = _a.render, renderContextMenu = _a.renderContextMenu;
if (!utils_1.isFunction(renderContextMenu)) {
throw new Error("@ContextMenuTarget-decorated class must implement `renderContextMenu`. " + constructor);
}
// patching classes like this requires preserving function context
// tslint:disable-next-line only-arrow-functions
constructor.prototype.render = function () {
var _this = this;
/* tslint:disable:no-invalid-this */
var element = render.call(this);
if (element == null) {
// always return `element` in case caller is distinguishing between `null` and `undefined`
return element;
}
var oldOnContextMenu = element.props.onContextMenu;
var onContextMenu = function (e) {
// support nested menus (inner menu target would have called preventDefault())
if (e.defaultPrevented) {
return;
}
var menu = _this.renderContextMenu(e);
if (menu != null) {
e.preventDefault();
ContextMenu.show(menu, { left: e.clientX, top: e.clientY });
}
utils_1.safeInvoke(oldOnContextMenu, e);
};
return React.cloneElement(element, { onContextMenu: onContextMenu });
/* tslint:enable:no-invalid-this */
};
}
exports.ContextMenuTarget = ContextMenuTarget;
;
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